An air pump is a great way to aerate water, reducing oxygen depletion by adding air into your fish pond during hot summer months. Likewise, pond ice can be deadly for fish, in the winter pond aeration inhibits light ice buildup and used with a pond heater is a great way for winterizing pond fish.

Hakko 40 for ponds 1,000 to 4,000 gallons with low to moderate fish population.

• Silent operation: noise level 32–36dB/1M
• Simple maintenance – motor and pump parts are built in one case
• Overload protection –
  auto switch off/on if temperature >120°C/<120°
• Completely oil free – guarantees a dry and pure air flow
• High efficiency – low power consumption
• 18 month warranty